NetBeans, html won't update

right this is a newbie question. I have installed netbeans and created a java application with a single applet file for hello world. First time when I build it it and run the app an html file is created that displays it. However if I make any changes and rebuild/recompile everything it just won't update. When I rightclick myApplet.java in netbeans and select run the changes are displayed- I have tried building the project, compiling the package and compiling the actual file in the netbeans project viewer thingy but nothing.

My "first" compilation was of a blank java project with nothing in it- when I move the file to another folder even if I put the jar and class files together with it I get a square with an X indicating it couldn't find em or something like that.

When you open the HTML file in a browser, there should be a java console for the java vm output messages. Copy the contents of that console here.
If you have a jar file containing the java class files, change the <APPLET tag in the HTML to include the archive=<jarfilename> attribute and remove the codebase= attribute.

4. I change "Hello world!" to "hello world! 123!", compilt it and run it- inside netbeans works but when I open it through that html page it's still "hello World!"

I have tried changing the <APPLET tag in the HTML to include the archive=<jarfilename> attribute and remove the codebase= attribute but it does not help and why would I have to do that should that not be done automatically??

java is so frustrating and silly! I am very grateful for your patience with me please don't give up on me!